Ralston, NE: what USGS's seismic model says

Ralston carries Seismic Design Category B under USGS's ASCE 7-16 model. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. Rank it against the rest of the country and Ralston sits at the 18th percentile for seismic hazard among 4,875 US cities.

Ralston by the numbers

USGS's underlying values for Ralston: 0.035g peak ground acceleration, 0.073g at short period, 0.045g at 1 second. Within Nebraska alone, Ralston ranks 21 of 32 cities by seismic hazard - the 35th percentile in-state. Ralston has a population of about 6,443.

Retrofit economics for Ralston

A full earthquake retrofit typically runs $5,000-$10,000 nationally (around $7,000 typical), driven mainly by house size and foundation type, not by Nebraska specifically. California's Earthquake Brace + Bolt grant, which covers a large share of this cost, is a California-only program and does not apply in Nebraska.

What this means for insurance

A Ralston homeowner cannot buy a standalone earthquake policy in most cases - it is added to an existing homeowners policy as an endorsement, so the place to start is a regular home-insurance quote.

Where Ralston's figures come from

Ralston's Category B and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. See the category explainer for what Category B does and doesn't tell you about Ralston.